CVE-2019-17263
CVE-2019-17263 is a low-severity vulnerability in Libfwsi Project Libfwsi with a CVSS 3.x base score of 3.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-125.
Key facts
- Severity: Low (CVSS 3.x base score 3.3)
- CVSS v2: 2.1
- EPSS exploit prediction: 1% (40th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-125
- Affected product: Libfwsi Project Libfwsi
- Published:
- Last modified:
Description
In libyal libfwsi before 20191006, libfwsi_extension_block_copy_from_byte_stream in libfwsi_extension_block.c has a heap-based buffer over-read because rejection of an unsupported size only considers values less than 6, even though values of 6 and 7 are also unsupported. NOTE: the vendor has disputed this as described in the GitHub issue
Frequently asked questions
- What is CVE-2019-17263?
- In libyal libfwsi before 20191006, libfwsi_extension_block_copy_from_byte_stream in libfwsi_extension_block.c has a heap-based buffer over-read because rejection of an unsupported size only considers values less than 6, even though values of 6 and 7 are also unsupported. NOTE: the vendor has disputed this as described in the GitHub issue
- How severe is CVE-2019-17263?
- CVE-2019-17263 has a CVSS 3.x base score of 3.3, rated low severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
- Is CVE-2019-17263 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2019-17263?
- CVE-2019-17263 affects Libfwsi Project Libfwsi. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2019-17263?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2019-17263 published?
- CVE-2019-17263 was published on 2019-10-06 and last updated on 2026-06-17.
References
- http://packetstormsecurity.com/files/154774/libyal-libfwsi-Buffer-Overread.html
- https://github.com/libyal/libfwsi/compare/20181227...20191006
- https://github.com/libyal/libfwsi/issues/13
Affected products (1)
- cpe:2.3:a:libfwsi_project:libfwsi:*:*:*:*:*:*:*:*
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